<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        'use strict';
        let map = new Map([["suziaho",45],["liyanchen",46]]);
       let name = map.get("suzihao");
       console.log(name);
       function js8(){
        var x = x = 9;

       }
    </script>
</head>
<body>

</body>
</html>